How to detect static grounding?
In subsection copper or switch ", the other end of the trunk" paving a check line. (1.5~2m square meters, each workshop can) 2~3 check point, fixed, clear marking.
Electrostatic grounding cable and equipment housings, table lamp rack work hob, good insulation, prevent short circuit, or even a broken connection.
Ground all use 6m square meters stranded copper core insulation wire anti-static, each floor or the appropriate section by a copper wire or above 40A switch, knife switch and the main line is to check and repair.
